Large-scale Hawthorne street improvements beginning this week

Some traffic lanes along Hawthorne Boulevard and Rosecrans Avenue will be closed starting this week as construction begins on street and sewer improvement projects that will continue through early next year.

Two lanes of traffic will remain open in either direction on Hawthorne Boulevard but the curb lane will be closed between El Segundo Boulevard and 132nd Street, and the middle lane will be closed from 140th Street to Rosecrans. Another lane will be closed in each direction for tree removal as well, community development officials said.

On Rosecrans Avenue, a westbound lane will be closed for sewer work through January 2015. Street widening and storm drain renovations also will take place on Rosecrans Avenue.

Hawthorne Boulevard will be widened in some areas, the pavement will be reconstructed, and new left-turn pockets will be added along with new sewer pipes, catch basin inlets, infiltration chambers, traffic signals and bike lanes.